Binds to ergosterol in fungal cell membranes, creating pores that increase membrane permeability, leading to leakage of intracellular contents and cell death
At a glance
Storage
Below 25°C, protect from light and moisture
Dosing
Oral and GI candidiasis, topical fungal infections
Max dose
500000 IU/dose; 2000000 IU/day
Duration: 7–14 days or until resolved
Oral and GI candidiasis
Max dose
500000 IU/dose; 2000000 IU/day
Duration: 7–14 days or until resolved
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Safety
Absolute contraindications — do not use
Adverse effects
Serious
Hypersensitivity reactions (rare)
Clinical resolution of lesionsAppetite and GI signs
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Interactions
No documented interactions.
Brands
International
Mycostatin
Bristol-Myers Squibb
Panalog (combination)
Novartis
India
Nystatin Oral Suspension
Glenmark
FAQs
Frequently asked questions
›What is Nystatin?
Nystatin is a polyene antifungal used in pets. Binds to ergosterol in fungal cell membranes, creating pores that increase membrane permeability, leading to leakage of intracellular contents and cell death
›What is Nystatin used for in pets?
Nystatin is used in veterinary medicine for: Oral and GI candidiasis, topical fungal infections; Oral and GI candidiasis.
›What is the Nystatin dose for dogs?
For dogs, Nystatin is typically dosed as follows — Oral and GI candidiasis, topical fungal infections: 22000–100000 IU/kg PO/topical TID to QID. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Nystatin dose for cats?
For cats, Nystatin is typically dosed as follows — Oral and GI candidiasis: 22000–100000 IU/kg PO/topical TID to QID. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What are the side effects of Nystatin?
Common: GI upset, Vomiting, Diarrhea. Serious (call your vet immediately): Hypersensitivity reactions (rare).
›Does Nystatin need a prescription?
Yes. Nystatin is a prescription medication and should only be administered under veterinary supervision.
›When should Nystatin not be used?
Do not use Nystatin if: Hypersensitivity to nystatin.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →References
References
The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.
Textbooks & handbooks — 5
- Plumb's Veterinary Drug Handbook
- Withrow & MacEwen's Small Animal Clinical Oncology
- Merck Veterinary Manual
- NRC Nutrient Requirements of Dogs and Cats
- Veterinary Pharmacology and Therapeutics (Riviere & Papich)
Clinical guidelines & consensus — 4
- ASPCA Animal Poison Control Center Guidelines
- AAHA Diabetes Management Guidelines
- ASPCA Poison Control Guidelines
- RECOVER CPR Guidelines
Journals & peer-reviewed studies — 2
- EPIC Study (J Vet Intern Med 2016)
- JVIM FAT CAT Study
Regulatory & approvals — 1
- CDSCO Veterinary Drug Approval Registry (1969–2026)
Databases — 1
- Washington State University VCPL MDR1 Database